Note: This page describes a glitch, trick, or exploit. To see others, click here.
Normally, it's impossible to leave the Ark of Yamato after entering. However, there exists a loading zone back to Ezofuji just out of bounds, behind the stairs where you enter. It can be reached by KT'ing over the invisible walls around the Ark interior.
This is not used in any major category. After returning to Ezofuji, the game will be in the same state as just prior to entering the Ark, and you can return to the Ark through the normal loading zone.